drivers/video/omap2/omapfb/omapfb-main.c

   1 /*
   2  * linux/drivers/video/omap2/omapfb-main.c
   3  *
   4  * Copyright (C) 2008 Nokia Corporation
   5  * Author: Tomi Valkeinen <tomi.valkeinen@nokia.com>
   6  *
   7  * Some code and ideas taken from drivers/video/omap/ driver
   8  * by Imre Deak.
   9  *
  10  * This program is free software; you can redistribute it and/or modify it
  11  * under the terms of the GNU General Public License version 2 as published by
  12  * the Free Software Foundation.
  13  *
  14  * This program is distributed in the hope that it will be useful, but WITHOUT
  15  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  16  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License for
  17  * more details.
  18  *
  19  * You should have received a copy of the GNU General Public License along with
  20  * this program.  If not, see <http://www.gnu.org/licenses/>.
  21  */
  22
  23 #include <linux/module.h>
  24 #include <linux/delay.h>
  25 #include <linux/slab.h>
  26 #include <linux/fb.h>
  27 #include <linux/dma-mapping.h>
  28 #include <linux/vmalloc.h>
  29 #include <linux/device.h>
  30 #include <linux/platform_device.h>
  31 #include <linux/omapfb.h>
  32
  33 #include <plat/display.h>
  34 #include <plat/vram.h>
  35 #include <plat/vrfb.h>
  36
  37 #include "omapfb.h"
  38
  39 #define MODULE_NAME     "omapfb"
  40
  41 #define OMAPFB_PLANE_XRES_MIN           8
  42 #define OMAPFB_PLANE_YRES_MIN           8
  43
  44 static char *def_mode;
  45 static char *def_vram;
  46 static int def_vrfb;
  47 static int def_rotate;
  48 static int def_mirror;
  49
  50 #ifdef DEBUG
  51 unsigned int omapfb_debug;
  52 module_param_named(debug, omapfb_debug, bool, 0644);
  53 static unsigned int omapfb_test_pattern;
  54 module_param_named(test, omapfb_test_pattern, bool, 0644);
  55 #endif
  56
  57 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi);
  58 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
  59                 struct omap_dss_device *dssdev);
  60
  61 #ifdef DEBUG
  62 static void draw_pixel(struct fb_info *fbi, int x, int y, unsigned color)
  63 {
  64         struct fb_var_screeninfo *var = &fbi->var;
  65         struct fb_fix_screeninfo *fix = &fbi->fix;
  66         void __iomem *addr = fbi->screen_base;
  67         const unsigned bytespp = var->bits_per_pixel >> 3;
  68         const unsigned line_len = fix->line_length / bytespp;
  69
  70         int r = (color >> 16) & 0xff;
  71         int g = (color >> 8) & 0xff;
  72         int b = (color >> 0) & 0xff;
  73
  74         if (var->bits_per_pixel == 16) {
  75                 u16 __iomem *p = (u16 __iomem *)addr;
  76                 p += y * line_len + x;
  77
  78                 r = r * 32 / 256;
  79                 g = g * 64 / 256;
  80                 b = b * 32 / 256;
  81
  82                 __raw_writew((r << 11) | (g << 5) | (b << 0), p);
  83         } else if (var->bits_per_pixel == 24) {
  84                 u8 __iomem *p = (u8 __iomem *)addr;
  85                 p += (y * line_len + x) * 3;
  86
  87                 __raw_writeb(b, p + 0);
  88                 __raw_writeb(g, p + 1);
  89                 __raw_writeb(r, p + 2);
  90         } else if (var->bits_per_pixel == 32) {
  91                 u32 __iomem *p = (u32 __iomem *)addr;
  92                 p += y * line_len + x;
  93                 __raw_writel(color, p);
  94         }
  95 }
  96
  97 static void fill_fb(struct fb_info *fbi)
  98 {
  99         struct fb_var_screeninfo *var = &fbi->var;
 100         const short w = var->xres_virtual;
 101         const short h = var->yres_virtual;
 102         void __iomem *addr = fbi->screen_base;
 103         int y, x;
 104
 105         if (!addr)
 106                 return;
 107
 108         DBG("fill_fb %dx%d, line_len %d bytes\n", w, h, fbi->fix.line_length);
 109
 110         for (y = 0; y < h; y++) {
 111                 for (x = 0; x < w; x++) {
 112                         if (x < 20 && y < 20)
 113                                 draw_pixel(fbi, x, y, 0xffffff);
 114                         else if (x < 20 && (y > 20 && y < h - 20))
 115                                 draw_pixel(fbi, x, y, 0xff);
 116                         else if (y < 20 && (x > 20 && x < w - 20))
 117                                 draw_pixel(fbi, x, y, 0xff00);
 118                         else if (x > w - 20 && (y > 20 && y < h - 20))
 119                                 draw_pixel(fbi, x, y, 0xff0000);
 120                         else if (y > h - 20 && (x > 20 && x < w - 20))
 121                                 draw_pixel(fbi, x, y, 0xffff00);
 122                         else if (x == 20 || x == w - 20 ||
 123                                         y == 20 || y == h - 20)
 124                                 draw_pixel(fbi, x, y, 0xffffff);
 125                         else if (x == y || w - x == h - y)
 126                                 draw_pixel(fbi, x, y, 0xff00ff);
 127                         else if (w - x == y || x == h - y)
 128                                 draw_pixel(fbi, x, y, 0x00ffff);
 129                         else if (x > 20 && y > 20 && x < w - 20 && y < h - 20) {
 130                                 int t = x * 3 / w;
 131                                 unsigned r = 0, g = 0, b = 0;
 132                                 unsigned c;
 133                                 if (var->bits_per_pixel == 16) {
 134                                         if (t == 0)
 135                                                 b = (y % 32) * 256 / 32;
 136                                         else if (t == 1)
 137                                                 g = (y % 64) * 256 / 64;
 138                                         else if (t == 2)
 139                                                 r = (y % 32) * 256 / 32;
 140                                 } else {
 141                                         if (t == 0)
 142                                                 b = (y % 256);
 143                                         else if (t == 1)
 144                                                 g = (y % 256);
 145                                         else if (t == 2)
 146                                                 r = (y % 256);
 147                                 }
 148                                 c = (r << 16) | (g << 8) | (b << 0);
 149                                 draw_pixel(fbi, x, y, c);
 150                         } else {
 151                                 draw_pixel(fbi, x, y, 0);
 152                         }
 153                 }
 154         }
 155 }
 156 #endif
 157
 158 static unsigned omapfb_get_vrfb_offset(const struct omapfb_info *ofbi, int rot)
 159 {
 160         const struct vrfb *vrfb = &ofbi->region.vrfb;
 161         unsigned offset;
 162
 163         switch (rot) {
 164         case FB_ROTATE_UR:
 165                 offset = 0;
 166                 break;
 167         case FB_ROTATE_CW:
 168                 offset = vrfb->yoffset;
 169                 break;
 170         case FB_ROTATE_UD:
 171                 offset = vrfb->yoffset * OMAP_VRFB_LINE_LEN + vrfb->xoffset;
 172                 break;
 173         case FB_ROTATE_CCW:
 174                 offset = vrfb->xoffset * OMAP_VRFB_LINE_LEN;
 175                 break;
 176         default:
 177                 BUG();
 178         }
 179
 180         offset *= vrfb->bytespp;
 181
 182         return offset;
 183 }
 184
 185 static u32 omapfb_get_region_rot_paddr(const struct omapfb_info *ofbi, int rot)
 186 {
 187         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 188                 return ofbi->region.vrfb.paddr[rot]
 189                         + omapfb_get_vrfb_offset(ofbi, rot);
 190         } else {
 191                 return ofbi->region.paddr;
 192         }
 193 }
 194
 195 static u32 omapfb_get_region_paddr(const struct omapfb_info *ofbi)
 196 {
 197         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 198                 return ofbi->region.vrfb.paddr[0];
 199         else
 200                 return ofbi->region.paddr;
 201 }
 202
 203 static void __iomem *omapfb_get_region_vaddr(const struct omapfb_info *ofbi)
 204 {
 205         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 206                 return ofbi->region.vrfb.vaddr[0];
 207         else
 208                 return ofbi->region.vaddr;
 209 }
 210
 211 static struct omapfb_colormode omapfb_colormodes[] = {
 212         {
 213                 .dssmode = OMAP_DSS_COLOR_UYVY,
 214                 .bits_per_pixel = 16,
 215                 .nonstd = OMAPFB_COLOR_YUV422,
 216         }, {
 217                 .dssmode = OMAP_DSS_COLOR_YUV2,
 218                 .bits_per_pixel = 16,
 219                 .nonstd = OMAPFB_COLOR_YUY422,
 220         }, {
 221                 .dssmode = OMAP_DSS_COLOR_ARGB16,
 222                 .bits_per_pixel = 16,
 223                 .red    = { .length = 4, .offset = 8, .msb_right = 0 },
 224                 .green  = { .length = 4, .offset = 4, .msb_right = 0 },
 225                 .blue   = { .length = 4, .offset = 0, .msb_right = 0 },
 226                 .transp = { .length = 4, .offset = 12, .msb_right = 0 },
 227         }, {
 228                 .dssmode = OMAP_DSS_COLOR_RGB16,
 229                 .bits_per_pixel = 16,
 230                 .red    = { .length = 5, .offset = 11, .msb_right = 0 },
 231                 .green  = { .length = 6, .offset = 5, .msb_right = 0 },
 232                 .blue   = { .length = 5, .offset = 0, .msb_right = 0 },
 233                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 234         }, {
 235                 .dssmode = OMAP_DSS_COLOR_RGB24P,
 236                 .bits_per_pixel = 24,
 237                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 238                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 239                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 240                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 241         }, {
 242                 .dssmode = OMAP_DSS_COLOR_RGB24U,
 243                 .bits_per_pixel = 32,
 244                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 245                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 246                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 247                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 248         }, {
 249                 .dssmode = OMAP_DSS_COLOR_ARGB32,
 250                 .bits_per_pixel = 32,
 251                 .red    = { .length = 8, .offset = 16, .msb_right = 0 },
 252                 .green  = { .length = 8, .offset = 8, .msb_right = 0 },
 253                 .blue   = { .length = 8, .offset = 0, .msb_right = 0 },
 254                 .transp = { .length = 8, .offset = 24, .msb_right = 0 },
 255         }, {
 256                 .dssmode = OMAP_DSS_COLOR_RGBA32,
 257                 .bits_per_pixel = 32,
 258                 .red    = { .length = 8, .offset = 24, .msb_right = 0 },
 259                 .green  = { .length = 8, .offset = 16, .msb_right = 0 },
 260                 .blue   = { .length = 8, .offset = 8, .msb_right = 0 },
 261                 .transp = { .length = 8, .offset = 0, .msb_right = 0 },
 262         }, {
 263                 .dssmode = OMAP_DSS_COLOR_RGBX32,
 264                 .bits_per_pixel = 32,
 265                 .red    = { .length = 8, .offset = 24, .msb_right = 0 },
 266                 .green  = { .length = 8, .offset = 16, .msb_right = 0 },
 267                 .blue   = { .length = 8, .offset = 8, .msb_right = 0 },
 268                 .transp = { .length = 0, .offset = 0, .msb_right = 0 },
 269         },
 270 };
 271
 272 static bool cmp_var_to_colormode(struct fb_var_screeninfo *var,
 273                 struct omapfb_colormode *color)
 274 {
 275         bool cmp_component(struct fb_bitfield *f1, struct fb_bitfield *f2)
 276         {
 277                 return f1->length == f2->length &&
 278                         f1->offset == f2->offset &&
 279                         f1->msb_right == f2->msb_right;
 280         }
 281
 282         if (var->bits_per_pixel == 0 ||
 283                         var->red.length == 0 ||
 284                         var->blue.length == 0 ||
 285                         var->green.length == 0)
 286                 return 0;
 287
 288         return var->bits_per_pixel == color->bits_per_pixel &&
 289                 cmp_component(&var->red, &color->red) &&
 290                 cmp_component(&var->green, &color->green) &&
 291                 cmp_component(&var->blue, &color->blue) &&
 292                 cmp_component(&var->transp, &color->transp);
 293 }
 294
 295 static void assign_colormode_to_var(struct fb_var_screeninfo *var,
 296                 struct omapfb_colormode *color)
 297 {
 298         var->bits_per_pixel = color->bits_per_pixel;
 299         var->nonstd = color->nonstd;
 300         var->red = color->red;
 301         var->green = color->green;
 302         var->blue = color->blue;
 303         var->transp = color->transp;
 304 }
 305
 306 static int fb_mode_to_dss_mode(struct fb_var_screeninfo *var,
 307                 enum omap_color_mode *mode)
 308 {
 309         enum omap_color_mode dssmode;
 310         int i;
 311
 312         /* first match with nonstd field */
 313         if (var->nonstd) {
 314                 for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 315                         struct omapfb_colormode *m = &omapfb_colormodes[i];
 316                         if (var->nonstd == m->nonstd) {
 317                                 assign_colormode_to_var(var, m);
 318                                 *mode = m->dssmode;
 319                                 return 0;
 320                         }
 321                 }
 322
 323                 return -EINVAL;
 324         }
 325
 326         /* then try exact match of bpp and colors */
 327         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 328                 struct omapfb_colormode *m = &omapfb_colormodes[i];
 329                 if (cmp_var_to_colormode(var, m)) {
 330                         assign_colormode_to_var(var, m);
 331                         *mode = m->dssmode;
 332                         return 0;
 333                 }
 334         }
 335
 336         /* match with bpp if user has not filled color fields
 337          * properly */
 338         switch (var->bits_per_pixel) {
 339         case 1:
 340                 dssmode = OMAP_DSS_COLOR_CLUT1;
 341                 break;
 342         case 2:
 343                 dssmode = OMAP_DSS_COLOR_CLUT2;
 344                 break;
 345         case 4:
 346                 dssmode = OMAP_DSS_COLOR_CLUT4;
 347                 break;
 348         case 8:
 349                 dssmode = OMAP_DSS_COLOR_CLUT8;
 350                 break;
 351         case 12:
 352                 dssmode = OMAP_DSS_COLOR_RGB12U;
 353                 break;
 354         case 16:
 355                 dssmode = OMAP_DSS_COLOR_RGB16;
 356                 break;
 357         case 24:
 358                 dssmode = OMAP_DSS_COLOR_RGB24P;
 359                 break;
 360         case 32:
 361                 dssmode = OMAP_DSS_COLOR_RGB24U;
 362                 break;
 363         default:
 364                 return -EINVAL;
 365         }
 366
 367         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 368                 struct omapfb_colormode *m = &omapfb_colormodes[i];
 369                 if (dssmode == m->dssmode) {
 370                         assign_colormode_to_var(var, m);
 371                         *mode = m->dssmode;
 372                         return 0;
 373                 }
 374         }
 375
 376         return -EINVAL;
 377 }
 378
 379 static int check_fb_res_bounds(struct fb_var_screeninfo *var)
 380 {
 381         int xres_min = OMAPFB_PLANE_XRES_MIN;
 382         int xres_max = 2048;
 383         int yres_min = OMAPFB_PLANE_YRES_MIN;
 384         int yres_max = 2048;
 385
 386         /* XXX: some applications seem to set virtual res to 0. */
 387         if (var->xres_virtual == 0)
 388                 var->xres_virtual = var->xres;
 389
 390         if (var->yres_virtual == 0)
 391                 var->yres_virtual = var->yres;
 392
 393         if (var->xres_virtual < xres_min || var->yres_virtual < yres_min)
 394                 return -EINVAL;
 395
 396         if (var->xres < xres_min)
 397                 var->xres = xres_min;
 398         if (var->yres < yres_min)
 399                 var->yres = yres_min;
 400         if (var->xres > xres_max)
 401                 var->xres = xres_max;
 402         if (var->yres > yres_max)
 403                 var->yres = yres_max;
 404
 405         if (var->xres > var->xres_virtual)
 406                 var->xres = var->xres_virtual;
 407         if (var->yres > var->yres_virtual)
 408                 var->yres = var->yres_virtual;
 409
 410         return 0;
 411 }
 412
 413 static void shrink_height(unsigned long max_frame_size,
 414                 struct fb_var_screeninfo *var)
 415 {
 416         DBG("can't fit FB into memory, reducing y\n");
 417         var->yres_virtual = max_frame_size /
 418                 (var->xres_virtual * var->bits_per_pixel >> 3);
 419
 420         if (var->yres_virtual < OMAPFB_PLANE_YRES_MIN)
 421                 var->yres_virtual = OMAPFB_PLANE_YRES_MIN;
 422
 423         if (var->yres > var->yres_virtual)
 424                 var->yres = var->yres_virtual;
 425 }
 426
 427 static void shrink_width(unsigned long max_frame_size,
 428                 struct fb_var_screeninfo *var)
 429 {
 430         DBG("can't fit FB into memory, reducing x\n");
 431         var->xres_virtual = max_frame_size / var->yres_virtual /
 432                 (var->bits_per_pixel >> 3);
 433
 434         if (var->xres_virtual < OMAPFB_PLANE_XRES_MIN)
 435                 var->xres_virtual = OMAPFB_PLANE_XRES_MIN;
 436
 437         if (var->xres > var->xres_virtual)
 438                 var->xres = var->xres_virtual;
 439 }
 440
 441 static int check_vrfb_fb_size(unsigned long region_size,
 442                 const struct fb_var_screeninfo *var)
 443 {
 444         unsigned long min_phys_size = omap_vrfb_min_phys_size(var->xres_virtual,
 445                 var->yres_virtual, var->bits_per_pixel >> 3);
 446
 447         return min_phys_size > region_size ? -EINVAL : 0;
 448 }
 449
 450 static int check_fb_size(const struct omapfb_info *ofbi,
 451                 struct fb_var_screeninfo *var)
 452 {
 453         unsigned long max_frame_size = ofbi->region.size;
 454         int bytespp = var->bits_per_pixel >> 3;
 455         unsigned long line_size = var->xres_virtual * bytespp;
 456
 457         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 458                 /* One needs to check for both VRFB and OMAPFB limitations. */
 459                 if (check_vrfb_fb_size(max_frame_size, var))
 460                         shrink_height(omap_vrfb_max_height(
 461                                 max_frame_size, var->xres_virtual, bytespp) *
 462                                 line_size, var);
 463
 464                 if (check_vrfb_fb_size(max_frame_size, var)) {
 465                         DBG("cannot fit FB to memory\n");
 466                         return -EINVAL;
 467                 }
 468
 469                 return 0;
 470         }
 471
 472         DBG("max frame size %lu, line size %lu\n", max_frame_size, line_size);
 473
 474         if (line_size * var->yres_virtual > max_frame_size)
 475                 shrink_height(max_frame_size, var);
 476
 477         if (line_size * var->yres_virtual > max_frame_size) {
 478                 shrink_width(max_frame_size, var);
 479                 line_size = var->xres_virtual * bytespp;
 480         }
 481
 482         if (line_size * var->yres_virtual > max_frame_size) {
 483                 DBG("cannot fit FB to memory\n");
 484                 return -EINVAL;
 485         }
 486
 487         return 0;
 488 }
 489
 490 /*
 491  * Consider if VRFB assisted rotation is in use and if the virtual space for
 492  * the zero degree view needs to be mapped. The need for mapping also acts as
 493  * the trigger for setting up the hardware on the context in question. This
 494  * ensures that one does not attempt to access the virtual view before the
 495  * hardware is serving the address translations.
 496  */
 497 static int setup_vrfb_rotation(struct fb_info *fbi)
 498 {
 499         struct omapfb_info *ofbi = FB2OFB(fbi);
 500         struct omapfb2_mem_region *rg = &ofbi->region;
 501         struct vrfb *vrfb = &rg->vrfb;
 502         struct fb_var_screeninfo *var = &fbi->var;
 503         struct fb_fix_screeninfo *fix = &fbi->fix;
 504         unsigned bytespp;
 505         bool yuv_mode;
 506         enum omap_color_mode mode;
 507         int r;
 508         bool reconf;
 509
 510         if (!rg->size || ofbi->rotation_type != OMAP_DSS_ROT_VRFB)
 511                 return 0;
 512
 513         DBG("setup_vrfb_rotation\n");
 514
 515         r = fb_mode_to_dss_mode(var, &mode);
 516         if (r)
 517                 return r;
 518
 519         bytespp = var->bits_per_pixel >> 3;
 520
 521         yuv_mode = mode == OMAP_DSS_COLOR_YUV2 || mode == OMAP_DSS_COLOR_UYVY;
 522
 523         /* We need to reconfigure VRFB if the resolution changes, if yuv mode
 524          * is enabled/disabled, or if bytes per pixel changes */
 525
 526         /* XXX we shouldn't allow this when framebuffer is mmapped */
 527
 528         reconf = false;
 529
 530         if (yuv_mode != vrfb->yuv_mode)
 531                 reconf = true;
 532         else if (bytespp != vrfb->bytespp)
 533                 reconf = true;
 534         else if (vrfb->xres != var->xres_virtual ||
 535                         vrfb->yres != var->yres_virtual)
 536                 reconf = true;
 537
 538         if (vrfb->vaddr[0] && reconf) {
 539                 fbi->screen_base = NULL;
 540                 fix->smem_start = 0;
 541                 fix->smem_len = 0;
 542                 iounmap(vrfb->vaddr[0]);
 543                 vrfb->vaddr[0] = NULL;
 544                 DBG("setup_vrfb_rotation: reset fb\n");
 545         }
 546
 547         if (vrfb->vaddr[0])
 548                 return 0;
 549
 550         omap_vrfb_setup(&rg->vrfb, rg->paddr,
 551                         var->xres_virtual,
 552                         var->yres_virtual,
 553                         bytespp, yuv_mode);
 554
 555         /* Now one can ioremap the 0 angle view */
 556         r = omap_vrfb_map_angle(vrfb, var->yres_virtual, 0);
 557         if (r)
 558                 return r;
 559
 560         /* used by open/write in fbmem.c */
 561         fbi->screen_base = ofbi->region.vrfb.vaddr[0];
 562
 563         fix->smem_start = ofbi->region.vrfb.paddr[0];
 564
 565         switch (var->nonstd) {
 566         case OMAPFB_COLOR_YUV422:
 567         case OMAPFB_COLOR_YUY422:
 568                 fix->line_length =
 569                         (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
 570                 break;
 571         default:
 572                 fix->line_length =
 573                         (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
 574                 break;
 575         }
 576
 577         fix->smem_len = var->yres_virtual * fix->line_length;
 578
 579         return 0;
 580 }
 581
 582 int dss_mode_to_fb_mode(enum omap_color_mode dssmode,
 583                         struct fb_var_screeninfo *var)
 584 {
 585         int i;
 586
 587         for (i = 0; i < ARRAY_SIZE(omapfb_colormodes); ++i) {
 588                 struct omapfb_colormode *mode = &omapfb_colormodes[i];
 589                 if (dssmode == mode->dssmode) {
 590                         assign_colormode_to_var(var, mode);
 591                         return 0;
 592                 }
 593         }
 594         return -ENOENT;
 595 }
 596
 597 void set_fb_fix(struct fb_info *fbi)
 598 {
 599         struct fb_fix_screeninfo *fix = &fbi->fix;
 600         struct fb_var_screeninfo *var = &fbi->var;
 601         struct omapfb_info *ofbi = FB2OFB(fbi);
 602         struct omapfb2_mem_region *rg = &ofbi->region;
 603
 604         DBG("set_fb_fix\n");
 605
 606         /* used by open/write in fbmem.c */
 607         fbi->screen_base = (char __iomem *)omapfb_get_region_vaddr(ofbi);
 608
 609         /* used by mmap in fbmem.c */
 610         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 611                 switch (var->nonstd) {
 612                 case OMAPFB_COLOR_YUV422:
 613                 case OMAPFB_COLOR_YUY422:
 614                         fix->line_length =
 615                                 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 2;
 616                         break;
 617                 default:
 618                         fix->line_length =
 619                                 (OMAP_VRFB_LINE_LEN * var->bits_per_pixel) >> 3;
 620                         break;
 621                 }
 622
 623                 fix->smem_len = var->yres_virtual * fix->line_length;
 624         } else {
 625                 fix->line_length =
 626                         (var->xres_virtual * var->bits_per_pixel) >> 3;
 627                 fix->smem_len = rg->size;
 628         }
 629
 630         fix->smem_start = omapfb_get_region_paddr(ofbi);
 631
 632         fix->type = FB_TYPE_PACKED_PIXELS;
 633
 634         if (var->nonstd)
 635                 fix->visual = FB_VISUAL_PSEUDOCOLOR;
 636         else {
 637                 switch (var->bits_per_pixel) {
 638                 case 32:
 639                 case 24:
 640                 case 16:
 641                 case 12:
 642                         fix->visual = FB_VISUAL_TRUECOLOR;
 643                         /* 12bpp is stored in 16 bits */
 644                         break;
 645                 case 1:
 646                 case 2:
 647                 case 4:
 648                 case 8:
 649                         fix->visual = FB_VISUAL_PSEUDOCOLOR;
 650                         break;
 651                 }
 652         }
 653
 654         fix->accel = FB_ACCEL_NONE;
 655
 656         fix->xpanstep = 1;
 657         fix->ypanstep = 1;
 658 }
 659
 660 /* check new var and possibly modify it to be ok */
 661 int check_fb_var(struct fb_info *fbi, struct fb_var_screeninfo *var)
 662 {
 663         struct omapfb_info *ofbi = FB2OFB(fbi);
 664         struct omap_dss_device *display = fb2display(fbi);
 665         enum omap_color_mode mode = 0;
 666         int i;
 667         int r;
 668
 669         DBG("check_fb_var %d\n", ofbi->id);
 670
 671         if (ofbi->region.size == 0)
 672                 return 0;
 673
 674         r = fb_mode_to_dss_mode(var, &mode);
 675         if (r) {
 676                 DBG("cannot convert var to omap dss mode\n");
 677                 return r;
 678         }
 679
 680         for (i = 0; i < ofbi->num_overlays; ++i) {
 681                 if ((ofbi->overlays[i]->supported_modes & mode) == 0) {
 682                         DBG("invalid mode\n");
 683                         return -EINVAL;
 684                 }
 685         }
 686
 687         if (var->rotate < 0 || var->rotate > 3)
 688                 return -EINVAL;
 689
 690         if (check_fb_res_bounds(var))
 691                 return -EINVAL;
 692
 693         if (check_fb_size(ofbi, var))
 694                 return -EINVAL;
 695
 696         if (var->xres + var->xoffset > var->xres_virtual)
 697                 var->xoffset = var->xres_virtual - var->xres;
 698         if (var->yres + var->yoffset > var->yres_virtual)
 699                 var->yoffset = var->yres_virtual - var->yres;
 700
 701         DBG("xres = %d, yres = %d, vxres = %d, vyres = %d\n",
 702                         var->xres, var->yres,
 703                         var->xres_virtual, var->yres_virtual);
 704
 705         var->height             = -1;
 706         var->width              = -1;
 707         var->grayscale          = 0;
 708
 709         if (display && display->driver->get_timings) {
 710                 struct omap_video_timings timings;
 711                 display->driver->get_timings(display, &timings);
 712
 713                 /* pixclock in ps, the rest in pixclock */
 714                 var->pixclock = timings.pixel_clock != 0 ?
 715                         KHZ2PICOS(timings.pixel_clock) :
 716                         0;
 717                 var->left_margin = timings.hfp;
 718                 var->right_margin = timings.hbp;
 719                 var->upper_margin = timings.vfp;
 720                 var->lower_margin = timings.vbp;
 721                 var->hsync_len = timings.hsw;
 722                 var->vsync_len = timings.vsw;
 723         } else {
 724                 var->pixclock = 0;
 725                 var->left_margin = 0;
 726                 var->right_margin = 0;
 727                 var->upper_margin = 0;
 728                 var->lower_margin = 0;
 729                 var->hsync_len = 0;
 730                 var->vsync_len = 0;
 731         }
 732
 733         /* TODO: get these from panel->config */
 734         var->vmode              = FB_VMODE_NONINTERLACED;
 735         var->sync               = 0;
 736
 737         return 0;
 738 }
 739
 740 /*
 741  * ---------------------------------------------------------------------------
 742  * fbdev framework callbacks
 743  * ---------------------------------------------------------------------------
 744  */
 745 static int omapfb_open(struct fb_info *fbi, int user)
 746 {
 747         return 0;
 748 }
 749
 750 static int omapfb_release(struct fb_info *fbi, int user)
 751 {
 752 #if 0
 753         struct omapfb_info *ofbi = FB2OFB(fbi);
 754         struct omapfb2_device *fbdev = ofbi->fbdev;
 755         struct omap_dss_device *display = fb2display(fbi);
 756
 757         DBG("Closing fb with plane index %d\n", ofbi->id);
 758
 759         omapfb_lock(fbdev);
 760
 761         if (display && display->get_update_mode && display->update) {
 762                 /* XXX this update should be removed, I think. But it's
 763                  * good for debugging */
 764                 if (display->get_update_mode(display) ==
 765                                 OMAP_DSS_UPDATE_MANUAL) {
 766                         u16 w, h;
 767
 768                         if (display->sync)
 769                                 display->sync(display);
 770
 771                         display->get_resolution(display, &w, &h);
 772                         display->update(display, 0, 0, w, h);
 773                 }
 774         }
 775
 776         if (display && display->sync)
 777                 display->sync(display);
 778
 779         omapfb_unlock(fbdev);
 780 #endif
 781         return 0;
 782 }
 783
 784 static unsigned calc_rotation_offset_dma(const struct fb_var_screeninfo *var,
 785                 const struct fb_fix_screeninfo *fix, int rotation)
 786 {
 787         unsigned offset;
 788
 789         offset = var->yoffset * fix->line_length +
 790                 var->xoffset * (var->bits_per_pixel >> 3);
 791
 792         return offset;
 793 }
 794
 795 static unsigned calc_rotation_offset_vrfb(const struct fb_var_screeninfo *var,
 796                 const struct fb_fix_screeninfo *fix, int rotation)
 797 {
 798         unsigned offset;
 799
 800         if (rotation == FB_ROTATE_UD)
 801                 offset = (var->yres_virtual - var->yres) *
 802                         fix->line_length;
 803         else if (rotation == FB_ROTATE_CW)
 804                 offset = (var->yres_virtual - var->yres) *
 805                         (var->bits_per_pixel >> 3);
 806         else
 807                 offset = 0;
 808
 809         if (rotation == FB_ROTATE_UR)
 810                 offset += var->yoffset * fix->line_length +
 811                         var->xoffset * (var->bits_per_pixel >> 3);
 812         else if (rotation == FB_ROTATE_UD)
 813                 offset -= var->yoffset * fix->line_length +
 814                         var->xoffset * (var->bits_per_pixel >> 3);
 815         else if (rotation == FB_ROTATE_CW)
 816                 offset -= var->xoffset * fix->line_length +
 817                         var->yoffset * (var->bits_per_pixel >> 3);
 818         else if (rotation == FB_ROTATE_CCW)
 819                 offset += var->xoffset * fix->line_length +
 820                         var->yoffset * (var->bits_per_pixel >> 3);
 821
 822         return offset;
 823 }
 824
 825
 826 /* setup overlay according to the fb */
 827 static int omapfb_setup_overlay(struct fb_info *fbi, struct omap_overlay *ovl,
 828                 u16 posx, u16 posy, u16 outw, u16 outh)
 829 {
 830         int r = 0;
 831         struct omapfb_info *ofbi = FB2OFB(fbi);
 832         struct fb_var_screeninfo *var = &fbi->var;
 833         struct fb_fix_screeninfo *fix = &fbi->fix;
 834         enum omap_color_mode mode = 0;
 835         int offset;
 836         u32 data_start_p;
 837         void __iomem *data_start_v;
 838         struct omap_overlay_info info;
 839         int xres, yres;
 840         int screen_width;
 841         int mirror;
 842         int rotation = var->rotate;
 843         int i;
 844
 845         for (i = 0; i < ofbi->num_overlays; i++) {
 846                 if (ovl != ofbi->overlays[i])
 847                         continue;
 848
 849                 rotation = (rotation + ofbi->rotation[i]) % 4;
 850                 break;
 851         }
 852
 853         DBG("setup_overlay %d, posx %d, posy %d, outw %d, outh %d\n", ofbi->id,
 854                         posx, posy, outw, outh);
 855
 856         if (rotation == FB_ROTATE_CW || rotation == FB_ROTATE_CCW) {
 857                 xres = var->yres;
 858                 yres = var->xres;
 859         } else {
 860                 xres = var->xres;
 861                 yres = var->yres;
 862         }
 863
 864
 865         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 866                 data_start_p = omapfb_get_region_rot_paddr(ofbi, rotation);
 867                 data_start_v = NULL;
 868         } else {
 869                 data_start_p = omapfb_get_region_paddr(ofbi);
 870                 data_start_v = omapfb_get_region_vaddr(ofbi);
 871         }
 872
 873         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 874                 offset = calc_rotation_offset_vrfb(var, fix, rotation);
 875         else
 876                 offset = calc_rotation_offset_dma(var, fix, rotation);
 877
 878         data_start_p += offset;
 879         data_start_v += offset;
 880
 881         if (offset)
 882                 DBG("offset %d, %d = %d\n",
 883                                 var->xoffset, var->yoffset, offset);
 884
 885         DBG("paddr %x, vaddr %p\n", data_start_p, data_start_v);
 886
 887         r = fb_mode_to_dss_mode(var, &mode);
 888         if (r) {
 889                 DBG("fb_mode_to_dss_mode failed");
 890                 goto err;
 891         }
 892
 893         switch (var->nonstd) {
 894         case OMAPFB_COLOR_YUV422:
 895         case OMAPFB_COLOR_YUY422:
 896                 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
 897                         screen_width = fix->line_length
 898                                 / (var->bits_per_pixel >> 2);
 899                         break;
 900                 }
 901         default:
 902                 screen_width = fix->line_length / (var->bits_per_pixel >> 3);
 903                 break;
 904         }
 905
 906         ovl->get_overlay_info(ovl, &info);
 907
 908         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB)
 909                 mirror = 0;
 910         else
 911                 mirror = ofbi->mirror;
 912
 913         info.paddr = data_start_p;
 914         info.vaddr = data_start_v;
 915         info.screen_width = screen_width;
 916         info.width = xres;
 917         info.height = yres;
 918         info.color_mode = mode;
 919         info.rotation_type = ofbi->rotation_type;
 920         info.rotation = rotation;
 921         info.mirror = mirror;
 922
 923         info.pos_x = posx;
 924         info.pos_y = posy;
 925         info.out_width = outw;
 926         info.out_height = outh;
 927
 928         r = ovl->set_overlay_info(ovl, &info);
 929         if (r) {
 930                 DBG("ovl->setup_overlay_info failed\n");
 931                 goto err;
 932         }
 933
 934         return 0;
 935
 936 err:
 937         DBG("setup_overlay failed\n");
 938         return r;
 939 }
 940
 941 /* apply var to the overlay */
 942 int omapfb_apply_changes(struct fb_info *fbi, int init)
 943 {
 944         int r = 0;
 945         struct omapfb_info *ofbi = FB2OFB(fbi);
 946         struct fb_var_screeninfo *var = &fbi->var;
 947         struct omap_overlay *ovl;
 948         u16 posx, posy;
 949         u16 outw, outh;
 950         int i;
 951
 952 #ifdef DEBUG
 953         if (omapfb_test_pattern)
 954                 fill_fb(fbi);
 955 #endif
 956
 957         for (i = 0; i < ofbi->num_overlays; i++) {
 958                 ovl = ofbi->overlays[i];
 959
 960                 DBG("apply_changes, fb %d, ovl %d\n", ofbi->id, ovl->id);
 961
 962                 if (ofbi->region.size == 0) {
 963                         /* the fb is not available. disable the overlay */
 964                         omapfb_overlay_enable(ovl, 0);
 965                         if (!init && ovl->manager)
 966                                 ovl->manager->apply(ovl->manager);
 967                         continue;
 968                 }
 969
 970                 if (init || (ovl->caps & OMAP_DSS_OVL_CAP_SCALE) == 0) {
 971                         int rotation = (var->rotate + ofbi->rotation[i]) % 4;
 972                         if (rotation == FB_ROTATE_CW ||
 973                                         rotation == FB_ROTATE_CCW) {
 974                                 outw = var->yres;
 975                                 outh = var->xres;
 976                         } else {
 977                                 outw = var->xres;
 978                                 outh = var->yres;
 979                         }
 980                 } else {
 981                         outw = ovl->info.out_width;
 982                         outh = ovl->info.out_height;
 983                 }
 984
 985                 if (init) {
 986                         posx = 0;
 987                         posy = 0;
 988                 } else {
 989                         posx = ovl->info.pos_x;
 990                         posy = ovl->info.pos_y;
 991                 }
 992
 993                 r = omapfb_setup_overlay(fbi, ovl, posx, posy, outw, outh);
 994                 if (r)
 995                         goto err;
 996
 997                 if (!init && ovl->manager)
 998                         ovl->manager->apply(ovl->manager);
 999         }
1000         return 0;
1001 err:
1002         DBG("apply_changes failed\n");
1003         return r;
1004 }
1005
1006 /* checks var and eventually tweaks it to something supported,
1007  * DO NOT MODIFY PAR */
1008 static int omapfb_check_var(struct fb_var_screeninfo *var, struct fb_info *fbi)
1009 {
1010         int r;
1011
1012         DBG("check_var(%d)\n", FB2OFB(fbi)->id);
1013
1014         r = check_fb_var(fbi, var);
1015
1016         return r;
1017 }
1018
1019 /* set the video mode according to info->var */
1020 static int omapfb_set_par(struct fb_info *fbi)
1021 {
1022         int r;
1023
1024         DBG("set_par(%d)\n", FB2OFB(fbi)->id);
1025
1026         set_fb_fix(fbi);
1027
1028         r = setup_vrfb_rotation(fbi);
1029         if (r)
1030                 return r;
1031
1032         r = omapfb_apply_changes(fbi, 0);
1033
1034         return r;
1035 }
1036
1037 static int omapfb_pan_display(struct fb_var_screeninfo *var,
1038                 struct fb_info *fbi)
1039 {
1040         struct fb_var_screeninfo new_var;
1041         int r;
1042
1043         DBG("pan_display(%d)\n", FB2OFB(fbi)->id);
1044
1045         if (var->xoffset == fbi->var.xoffset &&
1046             var->yoffset == fbi->var.yoffset)
1047                 return 0;
1048
1049         new_var = fbi->var;
1050         new_var.xoffset = var->xoffset;
1051         new_var.yoffset = var->yoffset;
1052
1053         fbi->var = new_var;
1054
1055         r = omapfb_apply_changes(fbi, 0);
1056
1057         return r;
1058 }
1059
1060 static void mmap_user_open(struct vm_area_struct *vma)
1061 {
1062         struct omapfb_info *ofbi = (struct omapfb_info *)vma->vm_private_data;
1063
1064         atomic_inc(&ofbi->map_count);
1065 }
1066
1067 static void mmap_user_close(struct vm_area_struct *vma)
1068 {
1069         struct omapfb_info *ofbi = (struct omapfb_info *)vma->vm_private_data;
1070
1071         atomic_dec(&ofbi->map_count);
1072 }
1073
1074 static struct vm_operations_struct mmap_user_ops = {
1075         .open = mmap_user_open,
1076         .close = mmap_user_close,
1077 };
1078
1079 static int omapfb_mmap(struct fb_info *fbi, struct vm_area_struct *vma)
1080 {
1081         struct omapfb_info *ofbi = FB2OFB(fbi);
1082         struct fb_fix_screeninfo *fix = &fbi->fix;
1083         unsigned long off;
1084         unsigned long start;
1085         u32 len;
1086
1087         if (vma->vm_end - vma->vm_start == 0)
1088                 return 0;
1089         if (vma->vm_pgoff > (~0UL >> PAGE_SHIFT))
1090                 return -EINVAL;
1091         off = vma->vm_pgoff << PAGE_SHIFT;
1092
1093         start = omapfb_get_region_paddr(ofbi);
1094         len = fix->smem_len;
1095         if (off >= len)
1096                 return -EINVAL;
1097         if ((vma->vm_end - vma->vm_start + off) > len)
1098                 return -EINVAL;
1099
1100         off += start;
1101
1102         DBG("user mmap region start %lx, len %d, off %lx\n", start, len, off);
1103
1104         vma->vm_pgoff = off >> PAGE_SHIFT;
1105         vma->vm_flags |= VM_IO | VM_RESERVED;
1106         vma->vm_page_prot = pgprot_writecombine(vma->vm_page_prot);
1107         vma->vm_ops = &mmap_user_ops;
1108         vma->vm_private_data = ofbi;
1109         if (io_remap_pfn_range(vma, vma->vm_start, off >> PAGE_SHIFT,
1110                              vma->vm_end - vma->vm_start, vma->vm_page_prot))
1111                 return -EAGAIN;
1112         /* vm_ops.open won't be called for mmap itself. */
1113         atomic_inc(&ofbi->map_count);
1114         return 0;
1115 }
1116
1117 /* Store a single color palette entry into a pseudo palette or the hardware
1118  * palette if one is available. For now we support only 16bpp and thus store
1119  * the entry only to the pseudo palette.
1120  */
1121 static int _setcolreg(struct fb_info *fbi, u_int regno, u_int red, u_int green,
1122                 u_int blue, u_int transp, int update_hw_pal)
1123 {
1124         /*struct omapfb_info *ofbi = FB2OFB(fbi);*/
1125         /*struct omapfb2_device *fbdev = ofbi->fbdev;*/
1126         struct fb_var_screeninfo *var = &fbi->var;
1127         int r = 0;
1128
1129         enum omapfb_color_format mode = OMAPFB_COLOR_RGB24U; /* XXX */
1130
1131         /*switch (plane->color_mode) {*/
1132         switch (mode) {
1133         case OMAPFB_COLOR_YUV422:
1134         case OMAPFB_COLOR_YUV420:
1135         case OMAPFB_COLOR_YUY422:
1136                 r = -EINVAL;
1137                 break;
1138         case OMAPFB_COLOR_CLUT_8BPP:
1139         case OMAPFB_COLOR_CLUT_4BPP:
1140         case OMAPFB_COLOR_CLUT_2BPP:
1141         case OMAPFB_COLOR_CLUT_1BPP:
1142                 /*
1143                    if (fbdev->ctrl->setcolreg)
1144                    r = fbdev->ctrl->setcolreg(regno, red, green, blue,
1145                    transp, update_hw_pal);
1146                    */
1147                 /* Fallthrough */
1148                 r = -EINVAL;
1149                 break;
1150         case OMAPFB_COLOR_RGB565:
1151         case OMAPFB_COLOR_RGB444:
1152         case OMAPFB_COLOR_RGB24P:
1153         case OMAPFB_COLOR_RGB24U:
1154                 if (r != 0)
1155                         break;
1156
1157                 if (regno < 0) {
1158                         r = -EINVAL;
1159                         break;
1160                 }
1161
1162                 if (regno < 16) {
1163                         u16 pal;
1164                         pal = ((red >> (16 - var->red.length)) <<
1165                                         var->red.offset) |
1166                                 ((green >> (16 - var->green.length)) <<
1167                                  var->green.offset) |
1168                                 (blue >> (16 - var->blue.length));
1169                         ((u32 *)(fbi->pseudo_palette))[regno] = pal;
1170                 }
1171                 break;
1172         default:
1173                 BUG();
1174         }
1175         return r;
1176 }
1177
1178 static int omapfb_setcolreg(u_int regno, u_int red, u_int green, u_int blue,
1179                 u_int transp, struct fb_info *info)
1180 {
1181         DBG("setcolreg\n");
1182
1183         return _setcolreg(info, regno, red, green, blue, transp, 1);
1184 }
1185
1186 static int omapfb_setcmap(struct fb_cmap *cmap, struct fb_info *info)
1187 {
1188         int count, index, r;
1189         u16 *red, *green, *blue, *transp;
1190         u16 trans = 0xffff;
1191
1192         DBG("setcmap\n");
1193
1194         red     = cmap->red;
1195         green   = cmap->green;
1196         blue    = cmap->blue;
1197         transp  = cmap->transp;
1198         index   = cmap->start;
1199
1200         for (count = 0; count < cmap->len; count++) {
1201                 if (transp)
1202                         trans = *transp++;
1203                 r = _setcolreg(info, index++, *red++, *green++, *blue++, trans,
1204                                 count == cmap->len - 1);
1205                 if (r != 0)
1206                         return r;
1207         }
1208
1209         return 0;
1210 }
1211
1212 static int omapfb_blank(int blank, struct fb_info *fbi)
1213 {
1214         struct omapfb_info *ofbi = FB2OFB(fbi);
1215         struct omapfb2_device *fbdev = ofbi->fbdev;
1216         struct omap_dss_device *display = fb2display(fbi);
1217         int do_update = 0;
1218         int r = 0;
1219
1220         omapfb_lock(fbdev);
1221
1222         switch (blank) {
1223         case FB_BLANK_UNBLANK:
1224                 if (display->state != OMAP_DSS_DISPLAY_SUSPENDED)
1225                         goto exit;
1226
1227                 if (display->driver->resume)
1228                         r = display->driver->resume(display);
1229
1230                 if (r == 0 && display->driver->get_update_mode &&
1231                                 display->driver->get_update_mode(display) ==
1232                                 OMAP_DSS_UPDATE_MANUAL)
1233                         do_update = 1;
1234
1235                 break;
1236
1237         case FB_BLANK_NORMAL:
1238                 /* FB_BLANK_NORMAL could be implemented.
1239                  * Needs DSS additions. */
1240         case FB_BLANK_VSYNC_SUSPEND:
1241         case FB_BLANK_HSYNC_SUSPEND:
1242         case FB_BLANK_POWERDOWN:
1243                 if (display->state != OMAP_DSS_DISPLAY_ACTIVE)
1244                         goto exit;
1245
1246                 if (display->driver->suspend)
1247                         r = display->driver->suspend(display);
1248
1249                 break;
1250
1251         default:
1252                 r = -EINVAL;
1253         }
1254
1255 exit:
1256         omapfb_unlock(fbdev);
1257
1258         if (r == 0 && do_update && display->driver->update) {
1259                 u16 w, h;
1260                 display->driver->get_resolution(display, &w, &h);
1261
1262                 r = display->driver->update(display, 0, 0, w, h);
1263         }
1264
1265         return r;
1266 }
1267
1268 #if 0
1269 /* XXX fb_read and fb_write are needed for VRFB */
1270 ssize_t omapfb_write(struct fb_info *info, const char __user *buf,
1271                 size_t count, loff_t *ppos)
1272 {
1273         DBG("omapfb_write %d, %lu\n", count, (unsigned long)*ppos);
1274         /* XXX needed for VRFB */
1275         return count;
1276 }
1277 #endif
1278
1279 static struct fb_ops omapfb_ops = {
1280         .owner          = THIS_MODULE,
1281         .fb_open        = omapfb_open,
1282         .fb_release     = omapfb_release,
1283         .fb_fillrect    = cfb_fillrect,
1284         .fb_copyarea    = cfb_copyarea,
1285         .fb_imageblit   = cfb_imageblit,
1286         .fb_blank       = omapfb_blank,
1287         .fb_ioctl       = omapfb_ioctl,
1288         .fb_check_var   = omapfb_check_var,
1289         .fb_set_par     = omapfb_set_par,
1290         .fb_pan_display = omapfb_pan_display,
1291         .fb_mmap        = omapfb_mmap,
1292         .fb_setcolreg   = omapfb_setcolreg,
1293         .fb_setcmap     = omapfb_setcmap,
1294         /*.fb_write     = omapfb_write,*/
1295 };
1296
1297 static void omapfb_free_fbmem(struct fb_info *fbi)
1298 {
1299         struct omapfb_info *ofbi = FB2OFB(fbi);
1300         struct omapfb2_device *fbdev = ofbi->fbdev;
1301         struct omapfb2_mem_region *rg;
1302
1303         rg = &ofbi->region;
1304
1305         if (rg->paddr)
1306                 if (omap_vram_free(rg->paddr, rg->size))
1307                         dev_err(fbdev->dev, "VRAM FREE failed\n");
1308
1309         if (rg->vaddr)
1310                 iounmap(rg->vaddr);
1311
1312         if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1313                 /* unmap the 0 angle rotation */
1314                 if (rg->vrfb.vaddr[0]) {
1315                         iounmap(rg->vrfb.vaddr[0]);
1316                         omap_vrfb_release_ctx(&rg->vrfb);
1317                         rg->vrfb.vaddr[0] = NULL;
1318                 }
1319         }
1320
1321         rg->vaddr = NULL;
1322         rg->paddr = 0;
1323         rg->alloc = 0;
1324         rg->size = 0;
1325 }
1326
1327 static void clear_fb_info(struct fb_info *fbi)
1328 {
1329         memset(&fbi->var, 0, sizeof(fbi->var));
1330         memset(&fbi->fix, 0, sizeof(fbi->fix));
1331         strlcpy(fbi->fix.id, MODULE_NAME, sizeof(fbi->fix.id));
1332 }
1333
1334 static int omapfb_free_all_fbmem(struct omapfb2_device *fbdev)
1335 {
1336         int i;
1337
1338         DBG("free all fbmem\n");
1339
1340         for (i = 0; i < fbdev->num_fbs; i++) {
1341                 struct fb_info *fbi = fbdev->fbs[i];
1342                 omapfb_free_fbmem(fbi);
1343                 clear_fb_info(fbi);
1344         }
1345
1346         return 0;
1347 }
1348
1349 static int omapfb_alloc_fbmem(struct fb_info *fbi, unsigned long size,
1350                 unsigned long paddr)
1351 {
1352         struct omapfb_info *ofbi = FB2OFB(fbi);
1353         struct omapfb2_device *fbdev = ofbi->fbdev;
1354         struct omapfb2_mem_region *rg;
1355         void __iomem *vaddr;
1356         int r;
1357
1358         rg = &ofbi->region;
1359         memset(rg, 0, sizeof(*rg));
1360
1361         size = PAGE_ALIGN(size);
1362
1363         if (!paddr) {
1364                 DBG("allocating %lu bytes for fb %d\n", size, ofbi->id);
1365                 r = omap_vram_alloc(OMAP_VRAM_MEMTYPE_SDRAM, size, &paddr);
1366         } else {
1367                 DBG("reserving %lu bytes at %lx for fb %d\n", size, paddr,
1368                                 ofbi->id);
1369                 r = omap_vram_reserve(paddr, size);
1370         }
1371
1372         if (r) {
1373                 dev_err(fbdev->dev, "failed to allocate framebuffer\n");
1374                 return -ENOMEM;
1375         }
1376
1377         if (ofbi->rotation_type != OMAP_DSS_ROT_VRFB) {
1378                 vaddr = ioremap_wc(paddr, size);
1379
1380                 if (!vaddr) {
1381                         dev_err(fbdev->dev, "failed to ioremap framebuffer\n");
1382                         omap_vram_free(paddr, size);
1383                         return -ENOMEM;
1384                 }
1385
1386                 DBG("allocated VRAM paddr %lx, vaddr %p\n", paddr, vaddr);
1387         } else {
1388                 r = omap_vrfb_request_ctx(&rg->vrfb);
1389                 if (r) {
1390                         dev_err(fbdev->dev, "vrfb create ctx failed\n");
1391                         return r;
1392                 }
1393
1394                 vaddr = NULL;
1395         }
1396
1397         rg->paddr = paddr;
1398         rg->vaddr = vaddr;
1399         rg->size = size;
1400         rg->alloc = 1;
1401
1402         return 0;
1403 }
1404
1405 /* allocate fbmem using display resolution as reference */
1406 static int omapfb_alloc_fbmem_display(struct fb_info *fbi, unsigned long size,
1407                 unsigned long paddr)
1408 {
1409         struct omapfb_info *ofbi = FB2OFB(fbi);
1410         struct omapfb2_device *fbdev = ofbi->fbdev;
1411         struct omap_dss_device *display;
1412         int bytespp;
1413
1414         display =  fb2display(fbi);
1415
1416         if (!display)
1417                 return 0;
1418
1419         switch (omapfb_get_recommended_bpp(fbdev, display)) {
1420         case 16:
1421                 bytespp = 2;
1422                 break;
1423         case 24:
1424                 bytespp = 4;
1425                 break;
1426         default:
1427                 bytespp = 4;
1428                 break;
1429         }
1430
1431         if (!size) {
1432                 u16 w, h;
1433
1434                 display->driver->get_resolution(display, &w, &h);
1435
1436                 if (ofbi->rotation_type == OMAP_DSS_ROT_VRFB) {
1437                         size = max(omap_vrfb_min_phys_size(w, h, bytespp),
1438                                         omap_vrfb_min_phys_size(h, w, bytespp));
1439
1440                         DBG("adjusting fb mem size for VRFB, %u -> %lu\n",
1441                                         w * h * bytespp, size);
1442                 } else {
1443                         size = w * h * bytespp;
1444                 }
1445         }
1446
1447         if (!size)
1448                 return 0;
1449
1450         return omapfb_alloc_fbmem(fbi, size, paddr);
1451 }
1452
1453 static enum omap_color_mode fb_format_to_dss_mode(enum omapfb_color_format fmt)
1454 {
1455         enum omap_color_mode mode;
1456
1457         switch (fmt) {
1458         case OMAPFB_COLOR_RGB565:
1459                 mode = OMAP_DSS_COLOR_RGB16;
1460                 break;
1461         case OMAPFB_COLOR_YUV422:
1462                 mode = OMAP_DSS_COLOR_YUV2;
1463                 break;
1464         case OMAPFB_COLOR_CLUT_8BPP:
1465                 mode = OMAP_DSS_COLOR_CLUT8;
1466                 break;
1467         case OMAPFB_COLOR_CLUT_4BPP:
1468                 mode = OMAP_DSS_COLOR_CLUT4;
1469                 break;
1470         case OMAPFB_COLOR_CLUT_2BPP:
1471                 mode = OMAP_DSS_COLOR_CLUT2;
1472                 break;
1473         case OMAPFB_COLOR_CLUT_1BPP:
1474                 mode = OMAP_DSS_COLOR_CLUT1;
1475                 break;
1476         case OMAPFB_COLOR_RGB444:
1477                 mode = OMAP_DSS_COLOR_RGB12U;
1478                 break;
1479         case OMAPFB_COLOR_YUY422:
1480                 mode = OMAP_DSS_COLOR_UYVY;
1481                 break;
1482         case OMAPFB_COLOR_ARGB16:
1483                 mode = OMAP_DSS_COLOR_ARGB16;
1484                 break;
1485         case OMAPFB_COLOR_RGB24U:
1486                 mode = OMAP_DSS_COLOR_RGB24U;
1487                 break;
1488         case OMAPFB_COLOR_RGB24P:
1489                 mode = OMAP_DSS_COLOR_RGB24P;
1490                 break;
1491         case OMAPFB_COLOR_ARGB32:
1492                 mode = OMAP_DSS_COLOR_ARGB32;
1493                 break;
1494         case OMAPFB_COLOR_RGBA32:
1495                 mode = OMAP_DSS_COLOR_RGBA32;
1496                 break;
1497         case OMAPFB_COLOR_RGBX32:
1498                 mode = OMAP_DSS_COLOR_RGBX32;
1499                 break;
1500         default:
1501                 mode = -EINVAL;
1502         }
1503
1504         return mode;
1505 }
1506
1507 static int omapfb_parse_vram_param(const char *param, int max_entries,
1508                 unsigned long *sizes, unsigned long *paddrs)
1509 {
1510         int fbnum;
1511         unsigned long size;
1512         unsigned long paddr = 0;
1513         char *p, *start;
1514
1515         start = (char *)param;
1516
1517         while (1) {
1518                 p = start;
1519
1520                 fbnum = simple_strtoul(p, &p, 10);
1521
1522                 if (p == param)
1523                         return -EINVAL;
1524
1525                 if (*p != ':')
1526                         return -EINVAL;
1527
1528                 if (fbnum >= max_entries)
1529                         return -EINVAL;
1530
1531                 size = memparse(p + 1, &p);
1532
1533                 if (!size)
1534                         return -EINVAL;
1535
1536                 paddr = 0;
1537
1538                 if (*p == '@') {
1539                         paddr = simple_strtoul(p + 1, &p, 16);
1540
1541                         if (!paddr)
1542                                 return -EINVAL;
1543
1544                 }
1545
1546                 paddrs[fbnum] = paddr;
1547                 sizes[fbnum] = size;
1548
1549                 if (*p == 0)
1550                         break;
1551
1552                 if (*p != ',')
1553                         return -EINVAL;
1554
1555                 ++p;
1556
1557                 start = p;
1558         }
1559
1560         return 0;
1561 }
1562
1563 static int omapfb_allocate_all_fbs(struct omapfb2_device *fbdev)
1564 {
1565         int i, r;
1566         unsigned long vram_sizes[10];
1567         unsigned long vram_paddrs[10];
1568
1569         memset(&vram_sizes, 0, sizeof(vram_sizes));
1570         memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1571
1572         if (def_vram && omapfb_parse_vram_param(def_vram, 10,
1573                                 vram_sizes, vram_paddrs)) {
1574                 dev_err(fbdev->dev, "failed to parse vram parameter\n");
1575
1576                 memset(&vram_sizes, 0, sizeof(vram_sizes));
1577                 memset(&vram_paddrs, 0, sizeof(vram_paddrs));
1578         }
1579
1580         if (fbdev->dev->platform_data) {
1581                 struct omapfb_platform_data *opd;
1582                 opd = fbdev->dev->platform_data;
1583                 for (i = 0; i < opd->mem_desc.region_cnt; ++i) {
1584                         if (!vram_sizes[i]) {
1585                                 unsigned long size;
1586                                 unsigned long paddr;
1587
1588                                 size = opd->mem_desc.region[i].size;
1589                                 paddr = opd->mem_desc.region[i].paddr;
1590
1591                                 vram_sizes[i] = size;
1592                                 vram_paddrs[i] = paddr;
1593                         }
1594                 }
1595         }
1596
1597         for (i = 0; i < fbdev->num_fbs; i++) {
1598                 /* allocate memory automatically only for fb0, or if
1599                  * excplicitly defined with vram or plat data option */
1600                 if (i == 0 || vram_sizes[i] != 0) {
1601                         r = omapfb_alloc_fbmem_display(fbdev->fbs[i],
1602                                         vram_sizes[i], vram_paddrs[i]);
1603
1604                         if (r)
1605                                 return r;
1606                 }
1607         }
1608
1609         for (i = 0; i < fbdev->num_fbs; i++) {
1610                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1611                 struct omapfb2_mem_region *rg;
1612                 rg = &ofbi->region;
1613
1614                 DBG("region%d phys %08x virt %p size=%lu\n",
1615                                 i,
1616                                 rg->paddr,
1617                                 rg->vaddr,
1618                                 rg->size);
1619         }
1620
1621         return 0;
1622 }
1623
1624 int omapfb_realloc_fbmem(struct fb_info *fbi, unsigned long size, int type)
1625 {
1626         struct omapfb_info *ofbi = FB2OFB(fbi);
1627         struct omapfb2_device *fbdev = ofbi->fbdev;
1628         struct omap_dss_device *display = fb2display(fbi);
1629         struct omapfb2_mem_region *rg = &ofbi->region;
1630         unsigned long old_size = rg->size;
1631         unsigned long old_paddr = rg->paddr;
1632         int old_type = rg->type;
1633         int r;
1634
1635         if (type > OMAPFB_MEMTYPE_MAX)
1636                 return -EINVAL;
1637
1638         size = PAGE_ALIGN(size);
1639
1640         if (old_size == size && old_type == type)
1641                 return 0;
1642
1643         if (display && display->driver->sync)
1644                         display->driver->sync(display);
1645
1646         omapfb_free_fbmem(fbi);
1647
1648         if (size == 0) {
1649                 clear_fb_info(fbi);
1650                 return 0;
1651         }
1652
1653         r = omapfb_alloc_fbmem(fbi, size, 0);
1654
1655         if (r) {
1656                 if (old_size)
1657                         omapfb_alloc_fbmem(fbi, old_size, old_paddr);
1658
1659                 if (rg->size == 0)
1660                         clear_fb_info(fbi);
1661
1662                 return r;
1663         }
1664
1665         if (old_size == size)
1666                 return 0;
1667
1668         if (old_size == 0) {
1669                 DBG("initializing fb %d\n", ofbi->id);
1670                 r = omapfb_fb_init(fbdev, fbi);
1671                 if (r) {
1672                         DBG("omapfb_fb_init failed\n");
1673                         goto err;
1674                 }
1675                 r = omapfb_apply_changes(fbi, 1);
1676                 if (r) {
1677                         DBG("omapfb_apply_changes failed\n");
1678                         goto err;
1679                 }
1680         } else {
1681                 struct fb_var_screeninfo new_var;
1682                 memcpy(&new_var, &fbi->var, sizeof(new_var));
1683                 r = check_fb_var(fbi, &new_var);
1684                 if (r)
1685                         goto err;
1686                 memcpy(&fbi->var, &new_var, sizeof(fbi->var));
1687                 set_fb_fix(fbi);
1688                 r = setup_vrfb_rotation(fbi);
1689                 if (r)
1690                         goto err;
1691         }
1692
1693         return 0;
1694 err:
1695         omapfb_free_fbmem(fbi);
1696         clear_fb_info(fbi);
1697         return r;
1698 }
1699
1700 /* initialize fb_info, var, fix to something sane based on the display */
1701 static int omapfb_fb_init(struct omapfb2_device *fbdev, struct fb_info *fbi)
1702 {
1703         struct fb_var_screeninfo *var = &fbi->var;
1704         struct omap_dss_device *display = fb2display(fbi);
1705         struct omapfb_info *ofbi = FB2OFB(fbi);
1706         int r = 0;
1707
1708         fbi->fbops = &omapfb_ops;
1709         fbi->flags = FBINFO_FLAG_DEFAULT;
1710         fbi->pseudo_palette = fbdev->pseudo_palette;
1711
1712         if (ofbi->region.size == 0) {
1713                 clear_fb_info(fbi);
1714                 return 0;
1715         }
1716
1717         var->nonstd = 0;
1718         var->bits_per_pixel = 0;
1719
1720         var->rotate = def_rotate;
1721
1722         /*
1723          * Check if there is a default color format set in the board file,
1724          * and use this format instead the default deducted from the
1725          * display bpp.
1726          */
1727         if (fbdev->dev->platform_data) {
1728                 struct omapfb_platform_data *opd;
1729                 int id = ofbi->id;
1730
1731                 opd = fbdev->dev->platform_data;
1732                 if (opd->mem_desc.region[id].format_used) {
1733                         enum omap_color_mode mode;
1734                         enum omapfb_color_format format;
1735
1736                         format = opd->mem_desc.region[id].format;
1737                         mode = fb_format_to_dss_mode(format);
1738                         if (mode < 0) {
1739                                 r = mode;
1740                                 goto err;
1741                         }
1742                         r = dss_mode_to_fb_mode(mode, var);
1743                         if (r < 0)
1744                                 goto err;
1745                 }
1746         }
1747
1748         if (display) {
1749                 u16 w, h;
1750                 int rotation = (var->rotate + ofbi->rotation[0]) % 4;
1751
1752                 display->driver->get_resolution(display, &w, &h);
1753
1754                 if (rotation == FB_ROTATE_CW ||
1755                                 rotation == FB_ROTATE_CCW) {
1756                         var->xres = h;
1757                         var->yres = w;
1758                 } else {
1759                         var->xres = w;
1760                         var->yres = h;
1761                 }
1762
1763                 var->xres_virtual = var->xres;
1764                 var->yres_virtual = var->yres;
1765
1766                 if (!var->bits_per_pixel) {
1767                         switch (omapfb_get_recommended_bpp(fbdev, display)) {
1768                         case 16:
1769                                 var->bits_per_pixel = 16;
1770                                 break;
1771                         case 24:
1772                                 var->bits_per_pixel = 32;
1773                                 break;
1774                         default:
1775                                 dev_err(fbdev->dev, "illegal display "
1776                                                 "bpp\n");
1777                                 return -EINVAL;
1778                         }
1779                 }
1780         } else {
1781                 /* if there's no display, let's just guess some basic values */
1782                 var->xres = 320;
1783                 var->yres = 240;
1784                 var->xres_virtual = var->xres;
1785                 var->yres_virtual = var->yres;
1786                 if (!var->bits_per_pixel)
1787                         var->bits_per_pixel = 16;
1788         }
1789
1790         r = check_fb_var(fbi, var);
1791         if (r)
1792                 goto err;
1793
1794         set_fb_fix(fbi);
1795         r = setup_vrfb_rotation(fbi);
1796         if (r)
1797                 goto err;
1798
1799         r = fb_alloc_cmap(&fbi->cmap, 256, 0);
1800         if (r)
1801                 dev_err(fbdev->dev, "unable to allocate color map memory\n");
1802
1803 err:
1804         return r;
1805 }
1806
1807 static void fbinfo_cleanup(struct omapfb2_device *fbdev, struct fb_info *fbi)
1808 {
1809         fb_dealloc_cmap(&fbi->cmap);
1810 }
1811
1812
1813 static void omapfb_free_resources(struct omapfb2_device *fbdev)
1814 {
1815         int i;
1816
1817         DBG("free_resources\n");
1818
1819         if (fbdev == NULL)
1820                 return;
1821
1822         for (i = 0; i < fbdev->num_fbs; i++)
1823                 unregister_framebuffer(fbdev->fbs[i]);
1824
1825         /* free the reserved fbmem */
1826         omapfb_free_all_fbmem(fbdev);
1827
1828         for (i = 0; i < fbdev->num_fbs; i++) {
1829                 fbinfo_cleanup(fbdev, fbdev->fbs[i]);
1830                 framebuffer_release(fbdev->fbs[i]);
1831         }
1832
1833         for (i = 0; i < fbdev->num_displays; i++) {
1834                 if (fbdev->displays[i]->state != OMAP_DSS_DISPLAY_DISABLED)
1835                         fbdev->displays[i]->driver->disable(fbdev->displays[i]);
1836
1837                 omap_dss_put_device(fbdev->displays[i]);
1838         }
1839
1840         dev_set_drvdata(fbdev->dev, NULL);
1841         kfree(fbdev);
1842 }
1843
1844 static int omapfb_create_framebuffers(struct omapfb2_device *fbdev)
1845 {
1846         int r, i;
1847
1848         fbdev->num_fbs = 0;
1849
1850         DBG("create %d framebuffers\n", CONFIG_FB_OMAP2_NUM_FBS);
1851
1852         /* allocate fb_infos */
1853         for (i = 0; i < CONFIG_FB_OMAP2_NUM_FBS; i++) {
1854                 struct fb_info *fbi;
1855                 struct omapfb_info *ofbi;
1856
1857                 fbi = framebuffer_alloc(sizeof(struct omapfb_info),
1858                                 fbdev->dev);
1859
1860                 if (fbi == NULL) {
1861                         dev_err(fbdev->dev,
1862                                 "unable to allocate memory for plane info\n");
1863                         return -ENOMEM;
1864                 }
1865
1866                 clear_fb_info(fbi);
1867
1868                 fbdev->fbs[i] = fbi;
1869
1870                 ofbi = FB2OFB(fbi);
1871                 ofbi->fbdev = fbdev;
1872                 ofbi->id = i;
1873
1874                 /* assign these early, so that fb alloc can use them */
1875                 ofbi->rotation_type = def_vrfb ? OMAP_DSS_ROT_VRFB :
1876                         OMAP_DSS_ROT_DMA;
1877                 ofbi->mirror = def_mirror;
1878
1879                 fbdev->num_fbs++;
1880         }
1881
1882         DBG("fb_infos allocated\n");
1883
1884         /* assign overlays for the fbs */
1885         for (i = 0; i < min(fbdev->num_fbs, fbdev->num_overlays); i++) {
1886                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[i]);
1887
1888                 ofbi->overlays[0] = fbdev->overlays[i];
1889                 ofbi->num_overlays = 1;
1890         }
1891
1892         /* allocate fb memories */
1893         r = omapfb_allocate_all_fbs(fbdev);
1894         if (r) {
1895                 dev_err(fbdev->dev, "failed to allocate fbmem\n");
1896                 return r;
1897         }
1898
1899         DBG("fbmems allocated\n");
1900
1901         /* setup fb_infos */
1902         for (i = 0; i < fbdev->num_fbs; i++) {
1903                 r = omapfb_fb_init(fbdev, fbdev->fbs[i]);
1904                 if (r) {
1905                         dev_err(fbdev->dev, "failed to setup fb_info\n");
1906                         return r;
1907                 }
1908         }
1909
1910         DBG("fb_infos initialized\n");
1911
1912         for (i = 0; i < fbdev->num_fbs; i++) {
1913                 r = register_framebuffer(fbdev->fbs[i]);
1914                 if (r != 0) {
1915                         dev_err(fbdev->dev,
1916                                 "registering framebuffer %d failed\n", i);
1917                         return r;
1918                 }
1919         }
1920
1921         DBG("framebuffers registered\n");
1922
1923         for (i = 0; i < fbdev->num_fbs; i++) {
1924                 r = omapfb_apply_changes(fbdev->fbs[i], 1);
1925                 if (r) {
1926                         dev_err(fbdev->dev, "failed to change mode\n");
1927                         return r;
1928                 }
1929         }
1930
1931         DBG("create sysfs for fbs\n");
1932         r = omapfb_create_sysfs(fbdev);
1933         if (r) {
1934                 dev_err(fbdev->dev, "failed to create sysfs entries\n");
1935                 return r;
1936         }
1937
1938         /* Enable fb0 */
1939         if (fbdev->num_fbs > 0) {
1940                 struct omapfb_info *ofbi = FB2OFB(fbdev->fbs[0]);
1941
1942                 if (ofbi->num_overlays > 0) {
1943                         struct omap_overlay *ovl = ofbi->overlays[0];
1944
1945                         r = omapfb_overlay_enable(ovl, 1);
1946
1947                         if (r) {
1948                                 dev_err(fbdev->dev,
1949                                                 "failed to enable overlay\n");
1950                                 return r;
1951                         }
1952                 }
1953         }
1954
1955         DBG("create_framebuffers done\n");
1956
1957         return 0;
1958 }
1959
1960 static int omapfb_mode_to_timings(const char *mode_str,
1961                 struct omap_video_timings *timings, u8 *bpp)
1962 {
1963         struct fb_info fbi;
1964         struct fb_var_screeninfo var;
1965         struct fb_ops fbops;
1966         int r;
1967
1968 #ifdef CONFIG_OMAP2_DSS_VENC
1969         if (strcmp(mode_str, "pal") == 0) {
1970                 *timings = omap_dss_pal_timings;
1971                 *bpp = 0;
1972                 return 0;
1973         } else if (strcmp(mode_str, "ntsc") == 0) {
1974                 *timings = omap_dss_ntsc_timings;
1975                 *bpp = 0;
1976                 return 0;
1977         }
1978 #endif
1979
1980         /* this is quite a hack, but I wanted to use the modedb and for
1981          * that we need fb_info and var, so we create dummy ones */
1982
1983         memset(&fbi, 0, sizeof(fbi));
1984         memset(&var, 0, sizeof(var));
1985         memset(&fbops, 0, sizeof(fbops));
1986         fbi.fbops = &fbops;
1987
1988         r = fb_find_mode(&var, &fbi, mode_str, NULL, 0, NULL, 24);
1989
1990         if (r != 0) {
1991                 timings->pixel_clock = PICOS2KHZ(var.pixclock);
1992                 timings->hfp = var.left_margin;
1993                 timings->hbp = var.right_margin;
1994                 timings->vfp = var.upper_margin;
1995                 timings->vbp = var.lower_margin;
1996                 timings->hsw = var.hsync_len;
1997                 timings->vsw = var.vsync_len;
1998                 timings->x_res = var.xres;
1999                 timings->y_res = var.yres;
2000
2001                 switch (var.bits_per_pixel) {
2002                 case 16:
2003                         *bpp = 16;
2004                         break;
2005                 case 24:
2006                 case 32:
2007                 default:
2008                         *bpp = 24;
2009                         break;
2010                 }
2011
2012                 return 0;
2013         } else {
2014                 return -EINVAL;
2015         }
2016 }
2017
2018 static int omapfb_set_def_mode(struct omapfb2_device *fbdev,
2019                 struct omap_dss_device *display, char *mode_str)
2020 {
2021         int r;
2022         u8 bpp;
2023         struct omap_video_timings timings;
2024
2025         r = omapfb_mode_to_timings(mode_str, &timings, &bpp);
2026         if (r)
2027                 return r;
2028
2029         fbdev->bpp_overrides[fbdev->num_bpp_overrides].dssdev = display;
2030         fbdev->bpp_overrides[fbdev->num_bpp_overrides].bpp = bpp;
2031         ++fbdev->num_bpp_overrides;
2032
2033         if (!display->driver->check_timings || !display->driver->set_timings)
2034                 return -EINVAL;
2035
2036         r = display->driver->check_timings(display, &timings);
2037         if (r)
2038                 return r;
2039
2040         display->driver->set_timings(display, &timings);
2041
2042         return 0;
2043 }
2044
2045 static int omapfb_get_recommended_bpp(struct omapfb2_device *fbdev,
2046                 struct omap_dss_device *dssdev)
2047 {
2048         int i;
2049
2050         BUG_ON(dssdev->driver->get_recommended_bpp == NULL);
2051
2052         for (i = 0; i < fbdev->num_bpp_overrides; ++i) {
2053                 if (dssdev == fbdev->bpp_overrides[i].dssdev)
2054                         return fbdev->bpp_overrides[i].bpp;
2055         }
2056
2057         return dssdev->driver->get_recommended_bpp(dssdev);
2058 }
2059
2060 static int omapfb_parse_def_modes(struct omapfb2_device *fbdev)
2061 {
2062         char *str, *options, *this_opt;
2063         int r = 0;
2064
2065         str = kmalloc(strlen(def_mode) + 1, GFP_KERNEL);
2066         strcpy(str, def_mode);
2067         options = str;
2068
2069         while (!r && (this_opt = strsep(&options, ",")) != NULL) {
2070                 char *p, *display_str, *mode_str;
2071                 struct omap_dss_device *display;
2072                 int i;
2073
2074                 p = strchr(this_opt, ':');
2075                 if (!p) {
2076                         r = -EINVAL;
2077                         break;
2078                 }
2079
2080                 *p = 0;
2081                 display_str = this_opt;
2082                 mode_str = p + 1;
2083
2084                 display = NULL;
2085                 for (i = 0; i < fbdev->num_displays; ++i) {
2086                         if (strcmp(fbdev->displays[i]->name,
2087                                                 display_str) == 0) {
2088                                 display = fbdev->displays[i];
2089                                 break;
2090                         }
2091                 }
2092
2093                 if (!display) {
2094                         r = -EINVAL;
2095                         break;
2096                 }
2097
2098                 r = omapfb_set_def_mode(fbdev, display, mode_str);
2099                 if (r)
2100                         break;
2101         }
2102
2103         kfree(str);
2104
2105         return r;
2106 }
2107
2108 static int omapfb_probe(struct platform_device *pdev)
2109 {
2110         struct omapfb2_device *fbdev = NULL;
2111         int r = 0;
2112         int i;
2113         struct omap_overlay *ovl;
2114         struct omap_dss_device *def_display;
2115         struct omap_dss_device *dssdev;
2116
2117         DBG("omapfb_probe\n");
2118
2119         if (pdev->num_resources != 0) {
2120                 dev_err(&pdev->dev, "probed for an unknown device\n");
2121                 r = -ENODEV;
2122                 goto err0;
2123         }
2124
2125         fbdev = kzalloc(sizeof(struct omapfb2_device), GFP_KERNEL);
2126         if (fbdev == NULL) {
2127                 r = -ENOMEM;
2128                 goto err0;
2129         }
2130
2131         mutex_init(&fbdev->mtx);
2132
2133         fbdev->dev = &pdev->dev;
2134         platform_set_drvdata(pdev, fbdev);
2135
2136         r = 0;
2137         fbdev->num_displays = 0;
2138         dssdev = NULL;
2139         for_each_dss_dev(dssdev) {
2140                 omap_dss_get_device(dssdev);
2141
2142                 if (!dssdev->driver) {
2143                         dev_err(&pdev->dev, "no driver for display\n");
2144                         r = -ENODEV;
2145                 }
2146
2147                 fbdev->displays[fbdev->num_displays++] = dssdev;
2148         }
2149
2150         if (r)
2151                 goto cleanup;
2152
2153         if (fbdev->num_displays == 0) {
2154                 dev_err(&pdev->dev, "no displays\n");
2155                 r = -EINVAL;
2156                 goto cleanup;
2157         }
2158
2159         fbdev->num_overlays = omap_dss_get_num_overlays();
2160         for (i = 0; i < fbdev->num_overlays; i++)
2161                 fbdev->overlays[i] = omap_dss_get_overlay(i);
2162
2163         fbdev->num_managers = omap_dss_get_num_overlay_managers();
2164         for (i = 0; i < fbdev->num_managers; i++)
2165                 fbdev->managers[i] = omap_dss_get_overlay_manager(i);
2166
2167         if (def_mode && strlen(def_mode) > 0) {
2168                 if (omapfb_parse_def_modes(fbdev))
2169                         dev_warn(&pdev->dev, "cannot parse default modes\n");
2170         }
2171
2172         r = omapfb_create_framebuffers(fbdev);
2173         if (r)
2174                 goto cleanup;
2175
2176         for (i = 0; i < fbdev->num_managers; i++) {
2177                 struct omap_overlay_manager *mgr;
2178                 mgr = fbdev->managers[i];
2179                 r = mgr->apply(mgr);
2180                 if (r)
2181                         dev_warn(fbdev->dev, "failed to apply dispc config\n");
2182         }
2183
2184         DBG("mgr->apply'ed\n");
2185
2186         /* gfx overlay should be the default one. find a display
2187          * connected to that, and use it as default display */
2188         ovl = omap_dss_get_overlay(0);
2189         if (ovl->manager && ovl->manager->device) {
2190                 def_display = ovl->manager->device;
2191         } else {
2192                 dev_warn(&pdev->dev, "cannot find default display\n");
2193                 def_display = NULL;
2194         }
2195
2196         if (def_display) {
2197                 struct omap_dss_driver *dssdrv = def_display->driver;
2198
2199                 r = def_display->driver->enable(def_display);
2200                 if (r) {
2201                         dev_warn(fbdev->dev, "Failed to enable display '%s'\n",
2202                                         def_display->name);
2203                         goto cleanup;
2204                 }
2205
2206                 if (def_display->caps & OMAP_DSS_DISPLAY_CAP_MANUAL_UPDATE) {
2207                         u16 w, h;
2208                         if (dssdrv->enable_te)
2209                                 dssdrv->enable_te(def_display, 1);
2210                         if (dssdrv->set_update_mode)
2211                                 dssdrv->set_update_mode(def_display,
2212                                                 OMAP_DSS_UPDATE_MANUAL);
2213
2214                         dssdrv->get_resolution(def_display, &w, &h);
2215                         def_display->driver->update(def_display, 0, 0, w, h);
2216                 } else {
2217                         if (dssdrv->set_update_mode)
2218                                 dssdrv->set_update_mode(def_display,
2219                                                 OMAP_DSS_UPDATE_AUTO);
2220                 }
2221         }
2222
2223         return 0;
2224
2225 cleanup:
2226         omapfb_free_resources(fbdev);
2227 err0:
2228         dev_err(&pdev->dev, "failed to setup omapfb\n");
2229         return r;
2230 }
2231
2232 static int omapfb_remove(struct platform_device *pdev)
2233 {
2234         struct omapfb2_device *fbdev = platform_get_drvdata(pdev);
2235
2236         /* FIXME: wait till completion of pending events */
2237
2238         omapfb_remove_sysfs(fbdev);
2239
2240         omapfb_free_resources(fbdev);
2241
2242         return 0;
2243 }
2244
2245 static struct platform_driver omapfb_driver = {
2246         .probe          = omapfb_probe,
2247         .remove         = omapfb_remove,
2248         .driver         = {
2249                 .name   = "omapfb",
2250                 .owner  = THIS_MODULE,
2251         },
2252 };
2253
2254 static int __init omapfb_init(void)
2255 {
2256         DBG("omapfb_init\n");
2257
2258         if (platform_driver_register(&omapfb_driver)) {
2259                 printk(KERN_ERR "failed to register omapfb driver\n");
2260                 return -ENODEV;
2261         }
2262
2263         return 0;
2264 }
2265
2266 static void __exit omapfb_exit(void)
2267 {
2268         DBG("omapfb_exit\n");
2269         platform_driver_unregister(&omapfb_driver);
2270 }
2271
2272 module_param_named(mode, def_mode, charp, 0);
2273 module_param_named(vram, def_vram, charp, 0);
2274 module_param_named(rotate, def_rotate, int, 0);
2275 module_param_named(vrfb, def_vrfb, bool, 0);
2276 module_param_named(mirror, def_mirror, bool, 0);
2277
2278 /* late_initcall to let panel/ctrl drivers loaded first.
2279  * I guess better option would be a more dynamic approach,
2280  * so that omapfb reacts to new panels when they are loaded */
2281 late_initcall(omapfb_init);
2282 /*module_init(omapfb_init);*/
2283 module_exit(omapfb_exit);
2284
2285 MODULE_AUTHOR("Tomi Valkeinen <tomi.valkeinen@nokia.com>");
2286 MODULE_DESCRIPTION("OMAP2/3 Framebuffer");
2287 MODULE_LICENSE("GPL v2");